TFG was the publisher of many wargames, including Star Fleet Battles. But not many Dungeons and Dragons related materials...this is a bit of an oddball.

https://www.ebay.com/itm/Dungeon-Tiles-Task-Force-1980-Sealed-OOP-Vintage-Role-Playing-Dungeons-amp-Dragons-/234301917353?&_trksid=p2056016.l4276